Where does “jäsning” come from?

jäsning (Swedish) comes from Swedish jäsa, from Middle High German jesen, from Old High German jesan, from Proto-Germanic jesaną, from Proto-Indo-European yes- — to foam; to boil.

jäsning (Swedish): fermentation

Definitions

  1. fermentation

Ancestry of “jäsning”, step by step

jäsning traces back through two separate lines of ancestry.

via Swedish jäsa

StepLanguageWordMeaning
1Swedishjäsato ferment
2Middle High Germanjesen
3Old High Germanjesanto ferment
4Proto-Germanicjesanąto ferment
5Proto-Indo-Europeanyes-to foam; to boil

via Swedish ning

StepLanguageWordMeaning
1Swedishning
Every word from Proto-Indo-European yes-